Mucocele Home Remedy: When a bump appears on the lips and is following the course of an injury, it is most likely a condition that is called a mucocele. Mucoceles can also develop as a result of a blocked salivary gland duct. A mucocele is a type of a cyst and is filled with mucus on another type of fluid. Cysts are arbitrary growths that can occur in various parts of the body and can generally follow some kind of injury. Usually, cysts will develop near a gland where fluid is readily available to inflate a cyst. The sac that envelops a cyst is usually a result of the